Home / 28,767.40-39,695.34-16,189.72

Finding the Fourth Proportional to 28,767.40, 39,695.34 and 16,189.72

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Solution

The fourth proportional to 28,767.40, 39,695.34 and 16,189.72 is: 22,339.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,767.40 : 39,695.34 = 16,189.72 : x
  2. Step 2: Convert to fraction form
    28,767.40/39,695.34 = 16,189.72/x
  3. Step 3: Cross multiply
    28,767.40x = 39,695.34 × 16,189.72
  4. Step 4: Simplify right side
    28,767.40x = 642,656,439.90
  5. Step 5: Solve for x
    x = 642,656,439.90/28,767.40
  6. Step 6: Final answer
    x = 22,339.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.